From: Felix Kuehling Date: Tue, 9 Jul 2019 23:09:42 +0000 (-0400) Subject: drm/ttm: Add release_notify callback to ttm_bo_driver X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=274840e544225657fbca4f12efa1ee55474bb800;p=linux.git drm/ttm: Add release_notify callback to ttm_bo_driver This notifies the driver that a BO is about to be released. Releasing a BO also invokes the move_notify callback from ttm_bo_cleanup_memtype_use, but that happens too late for anything that would add fences to the BO and require a delayed delete. Signed-off-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index a7fd5a4955c96..939b9258d5135 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -671,6 +671,9 @@ static void ttm_bo_release(struct kref *kref) struct ttm_bo_device *bdev = bo->bdev; struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type]; + if (bo->bdev->driver->release_notify) + bo->bdev->driver->release_notify(bo); + drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); ttm_mem_io_lock(man, false); ttm_mem_io_free_vm(bo); diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index a2d810a2504d3..81077e5b4b7ed 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -390,6 +390,16 @@ struct ttm_bo_driver { * notify driver that a BO was deleted from LRU. */ void (*del_from_lru_notify)(struct ttm_buffer_object *bo); + + /** + * Notify the driver that we're about to release a BO + * + * @bo: BO that is about to be released + * + * Gives the driver a chance to do any cleanup, including + * adding fences that may force a delayed delete + */ + void (*release_notify)(struct ttm_buffer_object *bo); }; /**